Tools & Wizards About Us
institut-sommeil-vigilance.org screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 94

    SEO

    Google-friendlier than
    90% of websites

institut-sommeil-vigilance.org

Accueil - INSV Institut National du Sommeil et de la Vigilance

Page Load Speed

3.9 sec in total

First Response

675 ms

Resources Loaded

3 sec

Page Rendered

219 ms

institut-sommeil-vigilance.org screenshot

About Website

Welcome to institut-sommeil-vigilance.org homepage info - get ready to check Institut Sommeil Vigilance best content for France right away, or after learning these important things about institut-sommeil-vigilance.org

INSV Institut National du Sommeil et de la Vigilance - Sensibiliser, informer et éduquer sur le sommeil, les troubles du sommeil et de la vigilance.

Visit institut-sommeil-vigilance.org

Key Findings

We analyzed Institut-sommeil-vigilance.org page load time and found that the first response time was 675 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

institut-sommeil-vigilance.org performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value18.0 s

0/100

25%

SI (Speed Index)

Value29.3 s

0/100

10%

TBT (Total Blocking Time)

Value11,920 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.021

100/100

15%

TTI (Time to Interactive)

Value48.2 s

0/100

10%

Network Requests Diagram

www.institut-sommeil-vigilance.org

675 ms

style.css

160 ms

validationEngine.jquery.css

189 ms

styles.css

183 ms

jquery.qtip.min.css

190 ms

Our browser made a total of 137 requests to load all elements on the main page. We found that 40% of them (55 requests) were addressed to the original Institut-sommeil-vigilance.org, 17% (23 requests) were made to Static.xx.fbcdn.net and 14% (19 requests) were made to Pbs.twimg.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Institut-sommeil-vigilance.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 531.5 kB (31%)

Content Size

1.7 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Institut-sommeil-vigilance.org main page is 1.7 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 85.4 kB

  • Original 109.9 kB
  • After minification 106.1 kB
  • After compression 24.5 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 85.4 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 39.6 kB

  • Original 1.1 MB
  • After minification 1.0 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Institut Sommeil Vigilance images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 294.1 kB

  • Original 434.9 kB
  • After minification 389.1 kB
  • After compression 140.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 294.1 kB or 68% of the original size.

CSS Optimization

-86%

Potential reduce by 112.3 kB

  • Original 131.4 kB
  • After minification 106.4 kB
  • After compression 19.0 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Institut-sommeil-vigilance.org needs all CSS files to be minified and compressed as it can save up to 112.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 83 (61%)

Requests Now

135

After Optimization

52

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Institut Sommeil Vigilance. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 48 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.institut-sommeil-vigilance.org

www.institut-sommeil-vigilance.org

675 ms

style.css

style.css

160 ms

validationEngine.jquery.css

validationEngine.jquery.css

189 ms

styles.css

styles.css

183 ms

jquery.qtip.min.css

jquery.qtip.min.css

190 ms

default.css

default.css

184 ms

rounded.css

rounded.css

189 ms

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339 ms

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455 ms

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98 ms

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219 ms

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Accessibility Review

institut-sommeil-vigilance.org accessibility score

88

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

institut-sommeil-vigilance.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

institut-sommeil-vigilance.org SEO score

94

Search Engine Optimization Advices

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Institut-sommeil-vigilance.org can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Institut-sommeil-vigilance.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

institut-sommeil-vigilance.org

Open Graph data is detected on the main page of Institut Sommeil Vigilance. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: